Wi-Fi Moochers: Some Wireless
Internet Fans 'Borrow' Access

Nigel Ballard was hauling the trash out one night several months ago when he spotted a digital loiterer in front of his house.

A man was sitting in a car blocking Mr. Ballard's driveway, the soft glow of a laptop illuminating the vehicle's interior. The driver was checking his e-mail. Mr. Ballard had set up a wireless antenna to share his high-speed Internet connection with neighbors, but he hadn't expected to see strangers dallying...